2011 Lexus HS 250h Owners Manual - Page 246
2011 Lexus HS 250h Manual
Page 246 highlights
2-4. Using other driving systems CAUTION n When the sensor may not be correctly detecting the vehicle ahead Apply the brakes as necessary in any of the following situations. l When water or snow thrown up by the surrounding vehicles hinders the function- ing of the sensor l When your vehicle is pointing upwards (caused by a heavy load in the luggage compartment etc.) l Vehicles that cut in suddenly l Vehicles with small rear ends (trailers with no load on board etc.) l Motorcycles traveling in the same lane n Handling the radar sensor 2 When driving Observe the following to ensure the pre-collision system can function effectively: l Keep the sensor and front grille cover clean at all times. Clean the sensor and front grille cover with a soft cloth so you do not mark or damage them. l Do not subject the sensor or surrounding area to a strong impact. If the sensor moves even slightly off position, the system may become inaccurate or malfunction. If the sensor or surrounding area is subject to a strong impact, always have the area inspected and adjusted by your Lexus dealer. l Do not disassemble the sensor. l Do not attach accessories or stickers to the sensor, grille cover or surrounding area. l Do not modify or paint the sensor and grille cover. n Determining the direction the driver is facing (vehicles with driver monitor sen- sor) The direction the driver is facing may not be determined correctly if the following conditions exist: l There is an object between the driver monitor sensor and the driver's face, such as when the sensor is blocked. l A part of the driver's face is covered. l The sensor or the driver's face is exposed to intense light such as sunlight. l The driving posture is improper. 243